Fix duplicate DPR call

[sfroment]

Right now since we don't return on callFn here https://github.com/topology-foundation/ts-drp/blob/226868a7716f826ccfa6e070a604169eaa11d4fe/packages/object/src/index.ts#L178-L180.
Any DRP method will be called twice increase by x2 the computation of any DRP.
Cause later on in the callFn we will have this https://github.com/topology-foundation/ts-drp/blob/226868a7716f826ccfa6e070a604169eaa11d4fe/packages/object/src/index.ts#L371-L375 which will call your DRP method.
Then we will call the Reflect.apply which itself will call the same function.
Instead we shall be propagating the state we already pre computed if it has changed